The teamspeak control panel is a way for you to manage your server through your webbrowser when you dont have access to a computer or if you just want to use a system that is easy to use and manage your server with to login to the control panel 

Logging in to the control panel

To login to the panel you first have to go to your teamspeak server go to tools and select serverquery login from the dropdown menu

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after you have done that just enter a name and you will get a password use that password and username to login to your server on the control panel